[Tutor] problem in ploting cylinders with different colour.
import numpy
from enthought.mayavi import mlab
#def test_mesh():
#A very pretty picture of spherical harmonics translated from
#the octaviz example.
for r in range (1,5):
print r
pi = numpy.pi
cos = numpy.cos
sin = numpy.sin
dphi, dtheta, dz = pi/250.0, pi/250.0, 0.01
#[phi,theta] = numpy.mgrid[0:pi+dphi*1.5:dphi,0:2*pi+dtheta*1.5:dtheta]
[phi,z] = numpy.mgrid[0:2*pi+dphi*1.5:dphi,0:2+dz*1.5:dz]
m0 = 4; m1 = 3; m2 = 2; m3 = 3; m4 = 6; m5 = 2; m6 = 6; m7 = 4;
# r = sin(m0*phi)**m1 + cos(m2*phi)**m3 + 5*sin(m4*theta)**m5 +
cos(m6*theta)**m7
#x = 1*sin(phi)*cos(theta)
#y = 1*sin(phi)*sin(theta)
#z = 1*cos(phi);
x=r*cos(phi)
y=r*sin(phi)
z=z
i=['Reds','greens','autumn','purples']
print i[r-1]
e=i[r-1]
mlab.mesh(x, y, z,colormap='e')
#print i[r-1]
Error:
TypeError Traceback (most recent call last)
C:\Python27\lib\site-packages\IPython\utils\py3compat.pyc in
execfile(fname, glob, loc)
166 else:
167 filename = fname
-- 168 exec compile(scripttext, filename, 'exec') in glob, loc
169 else:
170 def execfile(fname, *where):
C:\Users\as\jhgf.py in module()
24 print i[r-1]
25 e=i[r-1]
--- 26 mlab.mesh(x, y, z,'e')
27 #print i[r-1]
28
C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
the_function(*args, **kwargs)
32 def document_pipeline(pipeline):
33 def the_function(*args, **kwargs):
--- 34 return pipeline(*args, **kwargs)
35
36 if hasattr(pipeline, 'doc'):
C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
__call__(self, *args, **kwargs)
77 scene.disable_render = True
78 # Then call the real logic
--- 79 output = self.__call_internal__(*args, **kwargs)
80 # And re-enable the rendering, if needed.
81 if scene is not None:
C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
__call_internal__(self, *args, **kwargs)
830 filters.
831
-- 832 self.source = self._source_function(*args, **kwargs)
833 kwargs.pop('name', None)
834 self.store_kwargs(kwargs)
TypeError: grid_source() takes exactly 3 arguments (4 given)
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[Tutor] problem in plotting circular plates at regular separation
from __future__ import division
import numpy
from enthought.mayavi import mlab
for r in range (1,5):
print r
pi = numpy.pi
cos = numpy.cos
sin = numpy.sin
dphi, dtheta, dz = pi/250.0, pi/250.0, 0.01
[s,theta]=numpy.mgrid[0.01:r+0.015:.01,0:2*pi+dtheta*1.5:dtheta]
x=s*cos(theta)
y=s*sin(theta)
z=r
mlab.mesh(x, y,z, colormap='Greens')
error:
AssertionErrorTraceback (most recent call last)
C:\Users\as\ipython-input-81-1360d2653557 in module()
13 y=s*sin(theta)
14 z=r
--- 15 mlab.mesh(x, y,z, colormap='Greens')
C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
the_function(*args, **kwargs)
32 def document_pipeline(pipeline):
33 def the_function(*args, **kwargs):
--- 34 return pipeline(*args, **kwargs)
35
36 if hasattr(pipeline, 'doc'):
C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
__call__(self, *args, **kwargs)
77 scene.disable_render = True
78 # Then call the real logic
--- 79 output = self.__call_internal__(*args, **kwargs)
80 # And re-enable the rendering, if needed.
81 if scene is not None:
C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
__call_internal__(self, *args, **kwargs)
830 filters.
831
-- 832 self.source = self._source_function(*args, **kwargs)
833 kwargs.pop('name', None)
834 self.store_kwargs(kwargs)
C:\Python27\lib\site-packages\mayavi\tools\sources.pyc in
grid_source(x, y, z, **kwargs)
1259 x, y, z, scalars = convert_to_arrays((x, y, z, scalars))
1260 data_source = MGridSource()
- 1261 data_source.reset(x=x, y=y, z=z, scalars=scalars)
1262
1263 name = kwargs.pop('name', 'GridSource')
C:\Python27\lib\site-packages\mayavi\tools\sources.pyc in reset(self, **traits)
689 assert len(x.shape) == 2, Array x must be 2 dimensional.
690 assert len(y.shape) == 2, Array y must be 2 dimensional.
-- 691 assert len(z.shape) == 2, Array z must be 2 dimensional.
692 assert x.shape == y.shape, Arrays x and y must have
same shape.
693 assert y.shape == z.shape, Arrays y and z must have
same shape.
AssertionError: Array z must be 2 dimensional.
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Re: [Tutor] problem in plotting circular plates at regular separation
On 14/02/12 13:56, Debashish Saha wrote: for r in range (1,5): ... z=r mlab.mesh(x, y,z, colormap='Greens') ... AssertionError: Array z must be 2 dimensional. And your question is? -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] problem in ploting cylinders with different colour.
Debashish Saha wrote: TypeError: grid_source() takes exactly 3 arguments (4 given) Is this error not clear enough? The function expects 3 arguments, you have given it 4. You need to give one fewer. The only tricky thing to remember is that when you have a method, one argument is the automatically provided self argument: function(a, b, c, d) # This is FOUR arguments. instance.method(a, b, c) # So is this, because there is also a self arg. -- Steven ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] problem in plotting circular plates at regular separation
On 14/02/2012 14:07, Alan Gauld wrote: On 14/02/12 13:56, Debashish Saha wrote: for r in range (1,5): ... z=r mlab.mesh(x, y,z, colormap='Greens') ... AssertionError: Array z must be 2 dimensional. And your question is? It's implied, please do my work for me because I can't be bothered to phrase a question. -- Cheers. Mark Lawrence. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Using __ini__.py for common fonctions
Hello All, I have 3 functions, common utilities which I use several times in many modules of a main package. I don't want to create an utilies.py module in the package. Instead I declare it in the __init__.py of the package. Then to use it inside my package I do the following: from package import my_common_utility_fonction. Is it ok to do this? Is it a common practise? Advices are welcome! Cheers Karim ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Using __ini__.py for common fonctions
Hello All, I have 3 functions, common utilities which I use several times in many modules of a main package. I don't want to create an utilies.py module in the package. Instead I declare it in the __init__.py of the package. Then to use it I do the following: from packe Is it ok to do this? Is it a common practise? Advices are welcome! ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Using __ini__.py for common fonctions
On 14/02/12 19:08, Karim wrote: Advices are welcome! Asking the same question twice does not double your chances of getting a reply. It may even reduce them. As to your question, it's not the most common way to do it, it's not even the way I'd recommend since what it does is hide your code by putting it somewhere a user is not likely to guess. In Python explicit beats implicit. Put it in a module where we can see where it lives. It makes maintenance much easier later. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Using __ini__.py for common fonctions
Le 14/02/2012 20:25, Alan Gauld a écrit : On 14/02/12 19:08, Karim wrote: Advices are welcome! Asking the same question twice does not double your chances of getting a reply. It may even reduce them. As to your question, it's not the most common way to do it, it's not even the way I'd recommend since what it does is hide your code by putting it somewhere a user is not likely to guess. In Python explicit beats implicit. Put it in a module where we can see where it lives. It makes maintenance much easier later. Sorry Alan, I have an issue w/ thunderbird and I found my first email in the Trash bin ! I did not know if my email was sent or not as I don't receive my email back (Don't know why). Thanks for your prompt answer. Cheers karim ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Learn Python The Hard Way, Ex19-3
Hello! I managed in the end to have more than 10 ways of doing it, moving now to Exercise 20. Thank you so much for helping me out every time. Regards, amt ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] specific recommendation for a Python book, to move from baby-level to intermediate-level
Hello! I have finished reading some Python tutorials. My favorite tutorial is the official tutorial at Python.org. I am hoping to find a professionally designed, serious, university level book (with exercises, with a learning disc, and answers, and an elaborately helpful website) that will carefully and surely guide me through learning computer programming with Python version 3. I want to be lifted up from a baby-level to an intermediate level. I don't want to spend a lot of time casually browsing through the websites, trying out different things. I am in a rush to become a Python expert, I need a job! I enjoy computer programming. Python is my only programming language. A note to Python Teachers: I downloaded Python version 3.2.2 on my computer. Most Python books and tutorials are several years old, for older, outdated versions. My learning Python got off to a slow start: Initially, I had spent over a week trying to figure out the (version 2) tutorial for Hello, World!, and the print/print() situation. Today, there is a huge and growing number of online Python tutorials and websites. My request is that the list of recommended tutorials be revised and updated. There is a sizable amount of learning and tutorial info at Python.org that seems to be valuable historical information rather than urgent-read-now-tutorials for new beginning programmers. For instance, there are some very well written Python tutorials from years 2009, 2007, and 2005. An idea: Delete all references to tutorials that are not version 2 or 3. And clearly label all the well-written version 2 tutorials, as being outdated version 2. For me, learning computer programming is easy, so far. What is difficult is finding the proper tutorials, and learning how to manage the difference between version 3.2.2 and older versions. For someone new to programming, the difference between version 3.2.2 and the older versions is enormous. (I have a background as a professional classroom teacher.) I am very eager to get kind help and wise counsel from others. If I need to install install Python version 2, buy a version 2 university-level book, read some version 2 tutorials, and do some version 2 exercises, please let me know. I want to quickly move myself from a baby-level to a capable, intermediate-level Python programmer. Please contact me when you have time. I am eager to connect with everyone and hear each person's comments. Have a GREAT day! From Your Friend: Tamar Osher Skype: tamarosher Email: emeraldoff...@hotmail.com Message Phone: 011- 1- 513-252-2936 www.HowToBeGifted.com - marketing communication, web design, and much more ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
